Christchurch

Marine Recreational Forecasts - Christchurch

Area Description:

Inshore waters from Lyttelton Harbour to the Waimakariri River mouth.

Situation:

Today, the easterly flow over the North Island turns southeast and weakens. A front moves onto the southwest of the South Island overnight. On Thursday, the front in the south weakens as it moves northwards over the country. A narrow ridge follows behind the front and a low and front in the Tasman Sea spread a moist northerly flow over central and northern parts of the country on Friday and Saturday. These features move rapidly over the country, and then on Sunday another front is likely to move onto the South Island from the southwest.

Warnings:

Nil for CONWAY

Forecasts:

Wednesday: Variable 5 knots. Northeast 15 knots developing late morning, rising to 20 knots this afternoon. Sea becoming moderate this afternoon. Fine apart from morning cloud.

Outlook:

Outlook until midnight Saturday: Thursday: Northeast 20 knots, becoming southwest 20 knots in the afternoon. Rain developing. Friday: Southwest 20 knots, easing to variable 5 knots early. Becoming northeast 20 knots later. Partly cloudy. Saturday: Northeast 20 knots, easing to easterly 10 knots early. Changing southwest 20 knots later. Rain developing.

Swell:

Marine Coastal Forecasts - Rangitata

Forecast:

Wednesday : Variable 10 knots. Northeast 15 knots developing by midday, then rising to 25 knots offshore this afternoon. Sea becoming rough offshore. Southwest swell 1 metre at times.

Outlook:

Outlook following 3 days: Thursday: Northeast 20 knots, becoming northeast 15 knots but southeast 25 knots inshore in the morning. Becoming southerly 25 knots everywhere in the evening. Sea becoming rough. Friday: Southwest 25 knots, easing to southerly 15 knots early. Turning northeast 15 knots later. Rough sea easing. Southerly swell becoming moderate. Saturday: Northeast 15 knots, changing southwest 25 knots later. Sea becoming rough. Moderate southeast swell easing.

Marine Coastal Forecasts - Chatham Islands

Forecast:

Wednesday : Variable 10 knots. Northeast 15 knots developing late evening. Sea slight. Long period southwest swell 2 metres, easing.

Outlook:

Outlook following 3 days: Thursday: Easterly 15 knots, rising to 25 knots in the morning. Becoming northerly 15 knots in the afternoon. Sea becoming rough for a time. Moderate northeast swell developing. Friday: Northerly 15 knots, becoming southwest 15 knots later. Moderate northeast swell dying out. Moderate southwest swell developing. Saturday: Southwest 15 knots, easing to variable 10 knots early. Becoming northeast 20 knots later. Moderate southwest swell.

Marine Coastal Forecasts - Conway

Forecast:

Wednesday : Variable 10 knots. Northeast 15 knots around midday, then rising to 25 knots this afternoon. Sea becoming rough. Southwest swell 1 metre at times.

Outlook:

Outlook following 3 days: Thursday: Northeast 20 knots, changing southwest 30 knots in the evening. Sea becoming rough. Friday: Southwest 30 knots, easing to southerly 15 knots early. Turning northeast 15 knots later. Rough sea easing. Southerly swell becoming moderate. Saturday: Northeast 15 knots, rising to 25 knots early. Changing southwest 20 knots late. Sea becoming rough for a time. Moderate southeast swell.